Adc Interface; Spi Interface - YUGE LPM2100 bg Series Usage Manual

LPM2100 bg NB Module Hardware Usage Guide

3.8 ADC interface

The LPM2100 bg series module provides a 10-bit analog-to-digital conversion input
interface for sample monitoring such as external temperature. The ADC pin voltage can be
read by the AT command.
In order to improve the accuracy of the ADC, the ADC trace should have a good
reference ground.
Pin Signal name
21 ADC

3.9 SPI interface

The LPM2100 bg series module provides a set of SPI interfaces with an interface voltage
of IO output level.
Pin Pin name
3 SPI-DI-1
4 SPI-DI-0
5 SPI-SCLK
6 SPI-CS
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Table 3-10 ADC Signal Definition
IO High value
AI Universal analog to digital converter interface
Table 3-11 SPI Signal Definition
IO Functional description
DI Host input slave output
DO Host output slave input
DO Serial clock signal
DO Chip select signal
Figure 3-16 SPI read timing diagram
Description
Remarks
IO voltage domain
IO voltage domain
IO voltage domain
IO voltage domain
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